you are joining us now. tell us what, how safe are public elementary schools in this country? so many parents have to be asking that question tonight. >> well, in general i think they're very safe and the comments that you've already heart regarding, you know, the nature of these type incidents that they don't occur very often. of course when they do, they're very high impact. i think that across the country school officials overall do a very good job of working hard to maintain safe school environments. it doesn't mean it's perfect and it certainly doesn't mean that anyone is going to be 100% safe. however, you know, as today's tragedy shows us, it can happen anywhere. >> well, staying with you, mo canady, we know that today we were hearing that the school had a buzz-in system. that there was somebody there checking people who came in. still this young man was still able to get in there, reportedly the son of one of the teachers. what is it that schools could be doing, should be doing to prevent something else like this as rare as it is. >> well, and certainly there's no way